Improving spectral efficiency of SAC-OCDMA systems by SPD scheme

Abstract

This letter presents a single photodiode detection (SPD) as an effective technique for eradicating both multiple-access interference (MAI) and phase-induced intensity noise (PIIN) in spectralamplitude coding optical code-division multiple-access (SAC-OCDMA) systems. Mathematical analysis and simulation experiments are used to investigate the spectral efficiency (SE) of SAC-OCDMA systems utilizing different detection techniques. Results show that the SPD technique significantly enhances the SE compared to AND as well as modified-AND subtraction detections. Keywords: SAC-OCDMA, single photodiode detection (SPD), spectral efficiency (SE), MAI, PIIN Classification: Fiber optics, Microwave photonics, Optical interconnection, Photonic signal processing, Photonic integration and systems References[1] S. B. Ahmad-Anas, M. K. Abdullah, M. Mokhtar, and S. D. Walker, "Multiple access interference elimination with enhanced chromatic dispersion tolerance in SAC OCDMA," IEICE Electron. Express, vol. 5, no. 16, pp. 617-623, Aug. 2008. [2] H. M. R. Al-Khafaji, S. A. Aljunid, and H. A. Fadhil, "Improved BER based on intensity noise alleviation using developed detection technique for incoherent SAC-OCDMA systems,"

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